Science and the Scientific Method

What is an observation?

• a guess about something

• a hypothesis for an experiment

• a description of an object made using the five senses

• your opinion of something

What is an inference?

• A guess that is based on your observations

• A description that is made using your five senses

• A hypotheis for an experiment

• Your opinion of something

What is a hypothesis?

• A description of something made using your five senses.

• A testable, educated guess that is written as an "if...then" statement

• Your opinion about something

• A solution to a problem

What is an independent variable?

• the results of an experiment

• the hypothesis of an experiment

• the data that is analyzed after doing an experiment

• the part of experiment that the scientist changes on purpose

Tags

NGSS.MS-PS2-2

What is a dependent variable?

• The results of an experiment

• The hypothesis for an experiment

• The data that is analyzed after an experiment is done

• The part of an experiment that a scientist changes on purpose

Tags

NGSS.MS-PS2-2

Identify the independent variable in the following hypothesis: "If the height of a ramp increases then the car will travel a farther distance."

• the distance the car travels

• height of the ramp

• increases

• farther

Identify the dependent variable from the following hypothesis "If the height of the ramp increases then the distance the car travels will be farther."

• height of the ramp

• distance the car travels

• increase

• farther

Tags

NGSS.MS-PS2-2

When doing an experiment how many variables should scientists change at a time?

• 4

• 3

• 2

• 1

Tags

NGSS.MS-PS2-2

Which statement is an observation of the picture?

• The dog's name is George

• The puppy is 4 months old

• The grass is green

• The dog is waiting for someone to throw a ball

Which statement is an inference based on the picture?

• There are two ice cream cones

• The color of the ice cream is white

• The background color of the picture is black

• The ice cream is from McDonalds